Sage Green Poplin Blouse with Stand Collar and Asymmetrical Button Placket

Tags have been cut out so I'm not sure the designer or the size - but this seems like something COS would make! Beautiful shade of sage green, made of a crisp cotton poplin and has an off centre/asymmetric button placket for extra intrigue. The button placket is covered, giving a neat front appearance. Sleeve buttons for easy rolling and buttoning into place. Curved high-low hem. Measurements for unknown size (presumed medium): PTP when buttoned: 23" Total length: 27" Sleeve from shoulder seam: 24"